Cumulative Update KB4495666 for Windows 10 Insider 1903 build 18362.53 Insider

Brink said:

What Keith mentioned is the only thing I could think of as well.

@HRPuffnstuff

Does it have Insider Preview in the edition name like below on your computer that got this update?

Attachment 230142

Brink, Mine does not have Insider Preview listed anywhere because I performed a clean install onto my hardware of 1903 from an ISO that I created from the UUP files. I got this update today but I was already running 1903, since 4-4-2019. And yes I checked my system info, nowhere does it say Insider Preview. For all intent and purposes, this a 1903 system that I am running.

f14tomcat said:

You had a regular 1809, not ever on any Ring at all at any time, offered the Feature Update? I'm not doubting you, but it does sound really odd.

Non insider 1809 machine offered 1903 during a WU check along with the other monthly updates

HRPuffnstuff said:

Non insider 1809 machine offered 1903 during a WU check along with the other monthly updates

Yes, congratulations!!! You beat Microsoft by over a month.

Getting severe FPS drops (from 50 to 15-20) in War Thunder after updating. Removed update and everything worked as before. MS definitely doesn't want me to game.

Night light and display color adjustment apps still do not work on my Asus TUF FX505DY with the new AMD Ryzen 5 3550H.

My system won't upgrade, I installed it yesterday with little to no use.
I recall that I read that Windows was going to reserve HDD space for updates but I don't know if they actually implemented that solution.
Looking at the logs, it looks like Windows update tries to write to hidden partition of the SSD and fails, could it be that Windows forgot to create the partition during the install process from 1803?

The error is as follows:
2019-04 Cumulative Update for Windows 10 Version 1903 for x64-based Systems (KB4495666) - Error 0x800f081f

Log:

Code:

    2019-04-10 04:30:48, Info                         [RelPost.exe] Enter WinReGetLogDirPath
    2019-04-10 04:30:48, Info                         [RelPost.exe] Update enhanced config info is enabled.
    2019-04-10 04:30:48, Error                        [RelPost.exe] IOCTL_STORAGE_QUERY_PROPERTY failed: 0x1
    2019-04-10 04:30:48, Info                         [RelPost.exe] WinRE is installed
    2019-04-10 04:30:48, Info                         [RelPost.exe] Exit WinReGetLogDirPath return error code: 0x0
    2019-04-10 04:30:48, Info                         [RelPost.exe] Enter WinReSetTriggerFile
    2019-04-10 04:30:48, Info                         [RelPost.exe] Parameters: DirName: \\?\GLOBALROOT\device\harddisk0\partition5\Recovery\Logs, fDelete: 1
    2019-04-10 04:30:48, Warning                      [RelPost.exe] WinReSetTriggerFile failed to delete file (0x2) in file base\diagnosis\srt\reagent2\reagent\logfile.cpp line 237
    2019-04-10 04:30:48, Info                         [RelPost.exe] Exit WinReSetTriggerFile return error code: 0x2

Partitions:
https://i.imgur.com/gNxckLC.jpg

The storage page is missing the reserved section: https://i.imgur.com/pEqBzgl.jpg

Other than Windows Update, everything else seems to work fine.
What's really strange is that the Windows flash plugin security update that the system downloaded together with this cumulative update installed without issues.
Any input would be appreciated, having to reconfigure everything twice within 48 hours would suck.